| From: Felix Fietkau <nbd@nbd.name> |
| Date: Fri, 4 Sep 2020 18:14:05 +0200 |
| Subject: [PATCH] net: ethernet: mtk_eth_soc: avoid rearming interrupt if |
| napi_complete returns false |
| |
| Reduces unnecessary interrupts |
| |
| Signed-off-by: Felix Fietkau <nbd@nbd.name> |
| --- |
| |
| --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c |
| +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c |
| @@ -1550,8 +1550,8 @@ static int mtk_napi_tx(struct napi_struc |
| if (status & MTK_TX_DONE_INT) |
| return budget; |
| |
| - napi_complete(napi); |
| - mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); |
| + if (napi_complete(napi)) |
| + mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); |
| |
| return tx_done; |
| } |
| @@ -1584,8 +1584,9 @@ poll_again: |
| remain_budget -= rx_done; |
| goto poll_again; |
| } |
| - napi_complete(napi); |
| - mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); |
| + |
| + if (napi_complete(napi)) |
| + mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); |
| |
| return rx_done + budget - remain_budget; |
| } |